skyquake/plugins/launchpad/src/settings.js

   1
   2 /*
   3  *
   4  *   Copyright 2016 RIFT.IO Inc
   5  *
   6  *   Licensed under the Apache License, Version 2.0 (the "License");
   7  *   you may not use this file except in compliance with the License.
   8  *   You may obtain a copy of the License at
   9  *
  10  *       http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  *   Unless required by applicable law or agreed to in writing, software
  13  *   distributed under the License is distributed on an "AS IS" BASIS,
  14  *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *   See the License for the specific language governing permissions and
  16  *   limitations under the License.
  17  *
  18  */
  19 function storageAvailable(type) {
  20         try {
  21                 var storage = window[type];
  22                 var x = '__storage_test_DEADBEEF__';
  23                 storage.setItem(x, x);
  24                 storage.removeItem(x);
  25                 return true;
  26         } catch (e) {
  27                 return false;
  28         }
  29 }
  30
  31 export class LaunchpadSettings {
  32
  33   constructor(args) {
  34     this.openedNsrsStorageKey = "openedNsrList";
  35     this.debug = (args && args.debug);
  36
  37     if (!storageAvailable('localStorage')) {
  38         this.canUseStorage = false;
  39         console.log("Unable to use window.localStorage");
  40         //throw "Unable to use window.localStorage";
  41
  42     } else {
  43         this.canUseStorage = true;
  44     }
  45   }
  46   openedNSRs() {
  47         if(this.debug) {
  48           console.log("LaunchpadSettings.openedNSRs called");
  49         }
  50         var nsrs = null;
  51         if (this.canUseStorage) {
  52                 let nsrStr = window.localStorage.getItem(this.openedNsrsStorageKey);
  53                 if (nsrStr) {
  54                         nsrs = nsrStr.split(',');
  55                 }
  56                 if (this.debug) {
  57                   console.log("got nsr ids=", nsrs);
  58                 }
  59         }
  60     return (nsrs) ? nsrs : [];
  61   }
  62
  63   addOpenNSR(nsrId) {
  64         let nsrs = this.openedNSRs();
  65         if (this.debug) {
  66           console.log("LaunchpadSettings.addOpenNSR. nsrs=", nsrs);
  67         }
  68
  69         if (!nsrs.includes(nsrId)) {
  70                 if (this.debug) {
  71                   console.log("adding nsr id=", nsrId);
  72                 }
  73                 nsrs.unshift(nsrId);
  74                 window.localStorage.setItem(this.openedNsrsStorageKey, nsrs);
  75         }
  76         return this;
  77
  78   }
  79
  80   removeOpenNSR(nsrId) {
  81         if (this.debug) {
  82           console.log("LaunchpadSettings.removeOpenNSR called with id:", nsrId);
  83         }
  84         if (this.canUseStorage) {
  85                 let nsrs = this.openedNSRs().filter(nsr_id => nsr_id != nsrId);
  86                 window.localStorage.setItem(this.openedNsrsStorageKey, nsrs);
  87         }
  88         return this;
  89   }
  90
  91   removeAllOpenNSRs() {
  92         if (this.canUseStorage) {
  93                 window.localStorage.removeItem(this.openedNsrsStorageKey);
  94         }
  95   }
  96 }
  97
  98 /*
  99 module.exports = {
 100         LaunchpadSettings: LaunchpadSettings
 101 }
 102 */